asp.net MVC-在DropDownListFor中使用字符串列表 [英] asp.net MVC - using list of strings in a DropDownListFor

问题描述

我正在尝试将Html.DropDownListFor与ViewBag中的字符串列表一起使用.

I am trying to use Html.DropDownListFor with the list of strings from a ViewBag.

基本上，我得到了一个ViewBag，其中包含诸如"Adam"，"Tom"，"Mike"等之类的字符串列表.

Basically I got a ViewBag with a list of string like "Adam","Tom","Mike" etc...

我在徘徊，是否有可能将此列表传递给DropDownListFor，其中Value和text都是列表中的项.

I was wandering if it is possible to pass this list in to DropDownListFor where both Value and text are the items from my list.

我无法在此处使用foreach ...

I wasn't able to use foreach here...

带有硬编码的示例:

@Html.DropDownListFor(model => model.Name, new SelectList(
          new List<Object>{

               new { value = "Adam" , text = "Adam"  },
               new { value = "Tom" , text = "Tom"  },
               new { value = "Mike" , text = "Mike"  },
               new { value = "Jake" , text = "Jake"  },
            },
          "value",
          "text",
           2))

推荐答案

您可以从字符串列表中生成 SelectListItem 的集合，并将其与 DropDownListFor 帮助器一起使用方法.

You can generate a collection of SelectListItems from the list of strings and use that with DropDownListFor helper method.

var names = new List<string> {"Adam", "Sam"};
ViewBag.Names = names.Select(f => new SelectListItem() {Value = f, Text = f});

并在视图中

@Html.DropDownListFor(f=>f.Name, ViewBag.Names as IEnumerable<SelectListItem>, 
                                                                    "select one")

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